Evidence map›Paper›PMID 39749718›Full record

SynthesisCancer medicine2025

Effectiveness and Safety of Treatments for Early-Stage Merkel Cell Carcinoma: A Systematic Review and Meta-Analysis of Randomized and Non-Randomized Studies.

Yves Paul Vincent Mbous, Rowida Mohamed, Usha Sambamoorthi, Murtuza Bharmal, Khalid M Kamal, Traci LeMasters, Joanna Kolodney, George A Kelley

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in Cancer medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
  2. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Yves Paul Vincent MbousSchool of Pharmacy, Department of Pharmaceutical Systems and Policy, Robert C. Byrd Health Sciences Center [North], West Virginia University, Morgantown, West Virginia, USA.ORCID https://orcid.org/0000-0002-6642-1073
Rowida MohamedDepartment of Obstetrics and Gynecology, Biological Sciences Division, The University of Chicago, Chicago, Illinois, USA.ORCID https://orcid.org/0000-0003-0656-3069
Usha SambamoorthiSchool of Pharmacy, Department of Pharmaceutical Systems and Policy, Robert C. Byrd Health Sciences Center [North], West Virginia University, Morgantown, West Virginia, USA.ORCID https://orcid.org/0000-0001-8311-1360
Murtuza BharmalAstraZeneca Oncology Outcomes Research, Boston, Massachusetts, USA.
Khalid M KamalSchool of Pharmacy, Department of Pharmaceutical Systems and Policy, Robert C. Byrd Health Sciences Center [North], West Virginia University, Morgantown, West Virginia, USA.ORCID https://orcid.org/0000-0003-4269-3370
Traci LeMastersOPEN Health, Bethesda, Maryland, USA.
Joanna KolodneyDepartment of Hematology/Oncology, School of Medicine, Robert C. Byrd Health Sciences Center [North], West Virginia University, Morgantown, West Virginia, USA.
George A KelleyDepartment of Epidemiology and Biostatistics, School of Public Health, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, West Virginia, USA.ORCID https://orcid.org/0000-0003-0595-4148

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThe lack of consensus on the benefits and harms of standard therapies, including surgery (SRx), radiotherapy (RTx), chemotherapy (CTx), and their combinations among early-stage MCC, prompted this study.

methodsA systematic review and meta-analysis of randomized and non-randomized studies published between January 01, 1972, and January 31, 2023, and having overall survival (OS), local recurrence (LR), regional recurrence (RR), disease-specific survival (DSS), and/or disease-free survival (DFS) as outcomes was conducted using the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed (NCBI), Scopus (ELSEVIER), and Web of Science (CLAVIRATE) databases. Hazard ratios (HRs) and their variances were pooled using the inverse variance heterogeneity model.

resultsForty-nine studies representing 46,215 participants were included in the meta-analysis. A statistically significant improvement in OS was observed for groups administered adjuvant RTx (SRx + RTx) compared to SRx only (HR = 0.78, 95% CI, 0.62-0.99), albeit with statistically significant heterogeneity (Q = 532.30, p < 0.001) and a large amount of inconsistency (I

conclusionsAlthough adjuvant RTx improves survival and recurrence outcomes among early-stage MCC, the safety and effectiveness of standard therapies in MCC remains poorly studied and, thus, affects the synthesis of evidence across important patient and clinical characteristics. Future research on the comparative effectiveness of different therapies is needed.

Indexed as

Carcinoma, Merkel CellRandomized Controlled Trials as TopicSkin NeoplasmsChemotherapy, AdjuvantCombined Modality TherapyDisease-Free SurvivalHumansNeoplasm Recurrence, LocalNeoplasm StagingRadiotherapy, AdjuvantTreatment Outcomedisease‐free survivaldisease‐specific survivallocal recurrenceMerkel cell carcinomameta‐analysisoverall survivalregional recurrence

Identifiers

PMID39749718
PMCPMC11696246

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.